EVW-1484 Ambiguous error message is displayed when an invalid DOB is …

…entered. (#47)

* Change 'numeric' error message

HOF currently treats the date 00-00-0000 as non-numeric so we need an error message that makes sense for both 12-mm-1987 and 00-00-0000

* Change acceptance tests for the new error message

acceptance_tests/features/validation.feature

@@ -9,7 +9,7 @@ Scenario: Wrong details in Enter Your Details
   And I continue
   Then the validation summary should contain
     """
-    Please enter numbers only
+    Please enter a valid date, for example, 22 3 1979
     Please enter your electronic visa waiver number
     """
 
@@ -24,15 +24,15 @@ Scenario: Entering an EVW number that is not found
     We can't find your EVW
     """
 
-Scenario: non-numeric dob
+Scenario: Entering a dob that is non-numeric
 
   Given I start the "Find your application" app
   When I enter "VALID1000" into "EVW number"
   And I enter the date "20-!!-1978" into "dob"
   And I click confirm details
   Then the validation summary should contain
     """
-    Please enter numbers only
+    Please enter a valid date, for example, 22 3 1979
     """
 
 Scenario: Entering an EVW number that cannot be updated

apps/find-your-application/translations/src/en/validation.json

@@ -6,7 +6,7 @@
   },
   "dob": {
     "required": "Enter your date of birth",
-    "numeric": "Please enter numbers only",
+    "numeric": "Please enter a valid date, for example, 22 3 1979",
     "future": "Date of birth cannot be in the future",
     "format": "Please use the correct date format, for example, 22 3 1979",
     "date": "Please use the correct date format, for example, 22 3 1979"